I was wondering this also, although, a secondary hack is to change the plist file's own bundle identifier. It looked through the code and could not find any comparison with the bundle identifier (from the plist file or elsewhere) but it DOES read the bundle identifier from the receipt.

@Charles Yeoman: thank you for the receipt verification module, it worked beautifully. I tested it in the Apple iTunes connect sandbox and it works great. My test app returned 173 as required, went and grabbed a receipt from the sandbox and worked great after that.

Actually, you should thank Thomas Tempelmann; it is his code. I wrote some little bit of something, but it was his work.